Table-A) CPU performance: 10.5.r06 (aka 10.6.beta), rebuilt and rerun, vs 10.5.r07 
Legend:
10.5.r06rr  = geant4-10-05-ref-06 (re-used build of June 28, 2019)
10.5.r07    = geant4-10-05-ref-07 

Average (CPU Time)/Event: 10.5.r06rr  vs 10.5.r07
#----------------------------------------------------------------------------
#  105r06rr                105r07                100*(r07-rr)/rr  sample
#
#  mean      error         mean      error       %diff error
#----------------------------------------------------------------------------
  268.1600   2.7163 	  271.5100   2.5505 	   1.2  1.4	 higgs.FTFP_BERT.1400.4 
   15.1040   0.1046 	   15.5110   0.0980 	   2.7  1.0	 e-100MeV.FTFP_BERT.100MeV.4 
   32.0460   0.3286 	   32.4460   0.2296 	   1.2  1.3	 e-100MeV.Shielding.100MeV.4 
   92.3950   0.7380 	   94.2830   0.7382 	   2.0  1.1	 e-100MeV.Shielding_EMZ.100MeV.4 
    0.0140   0.0001 	    0.0139   0.0001 	  -0.7  1.0	 e-.FTFP_BERT.1.0 
    0.0701   0.0004 	    0.0697   0.0005 	  -0.6  0.9	 e-.FTFP_BERT.5.0 
    0.1403   0.0008 	    0.1394   0.0010 	  -0.6  0.9	 e-.FTFP_BERT.10.0 
    0.6980   0.0054 	    0.6938   0.0048 	  -0.6  1.0	 e-.FTFP_BERT.50.0 
    0.0179   0.0001 	    0.0183   0.0001 	   2.2  0.8	 e-.FTFP_BERT.1.4 
    0.0899   0.0006 	    0.0920   0.0006 	   2.3  1.0	 e-.FTFP_BERT.5.4 
    0.1797   0.0013 	    0.1837   0.0011 	   2.2  1.0	 e-.FTFP_BERT.10.4 
    0.8953   0.0064 	    0.9148   0.0051 	   2.2  0.9	 e-.FTFP_BERT.50.4 
    0.0246   0.0001 	    0.0244   0.0001 	  -0.8  0.6	 pi-.FTFP_BERT.1.0 
    0.1013   0.0006 	    0.1001   0.0004 	  -1.2  0.7	 pi-.FTFP_BERT.5.0 
    0.1898   0.0011 	    0.1893   0.0008 	  -0.3  0.7	 pi-.FTFP_BERT.10.0 
    0.8766   0.0062 	    0.8664   0.0047 	  -1.2  0.9	 pi-.FTFP_BERT.50.0 
    0.0274   0.0002 	    0.0276   0.0001 	   0.7  0.8	 pi-.FTFP_BERT.1.4 
    0.1141   0.0007 	    0.1149   0.0006 	   0.7  0.8	 pi-.FTFP_BERT.5.4 
    0.2179   0.0013 	    0.2199   0.0011 	   0.9  0.8	 pi-.FTFP_BERT.10.4 
    1.0216   0.0072 	    1.0383   0.0065 	   1.6  1.0	 pi-.FTFP_BERT.50.4 
    0.0275   0.0002 	    0.0275   0.0001 	   0.0  0.8	 pi-.QGSP_BERT.1.4 
    0.1144   0.0007 	    0.1137   0.0005 	  -0.6  0.7	 pi-.QGSP_BERT.5.4 
    0.2191   0.0014 	    0.2200   0.0009 	   0.4  0.8	 pi-.QGSP_BERT.10.4 
    1.0234   0.0058 	    1.0239   0.0060 	   0.0  0.8	 pi-.QGSP_BERT.50.4 
    0.0274   0.0002 	    0.0275   0.0001 	   0.4  0.8	 pi-.QGSP_BIC.1.4 
    0.1163   0.0006 	    0.1168   0.0005 	   0.4  0.7	 pi-.QGSP_BIC.5.4 
    0.2199   0.0012 	    0.2213   0.0008 	   0.6  0.7	 pi-.QGSP_BIC.10.4 
    1.0377   0.0079 	    1.0422   0.0045 	   0.4  0.9	 pi-.QGSP_BIC.50.4 
    0.0643   0.0004 	    0.0648   0.0003 	   0.8  0.8	 anti_proton.FTFP_BERT.1.4 
    0.1516   0.0008 	    0.1528   0.0007 	   0.8  0.7	 anti_proton.FTFP_BERT.5.4 
    0.2577   0.0017 	    0.2586   0.0013 	   0.3  0.8	 anti_proton.FTFP_BERT.10.4 
    1.0759   0.0080 	    1.0816   0.0059 	   0.5  0.9	 anti_proton.FTFP_BERT.50.4 
    0.0185   0.0001 	    0.0185   0.0001 	   0.0  0.8	 proton.FTFP_BERT.1.4 
    0.1097   0.0006 	    0.1094   0.0005 	  -0.3  0.7	 proton.FTFP_BERT.5.4 
    0.2189   0.0011 	    0.2199   0.0011 	   0.5  0.7	 proton.FTFP_BERT.10.4 
    1.0421   0.0074 	    1.0526   0.0055 	   1.0  0.9	 proton.FTFP_BERT.50.4 
    0.1192   0.0005 	    0.1200   0.0009 	   0.7  0.9	 pi-.FTFP_INCLXX.1.4 
    0.4054   0.0017 	    0.4127   0.0030 	   1.8  0.9	 pi-.FTFP_INCLXX.5.4 
    0.7200   0.0026 	    0.7413   0.0055 	   3.0  0.8	 pi-.FTFP_INCLXX.10.4 
    1.0383   0.0047 	    1.0598   0.0068 	   2.1  0.8	 pi-.FTFP_INCLXX.15.4 
    0.0963   0.0005 	    0.0966   0.0007 	   0.3  0.9	 proton.FTFP_INCLXX.1.4 
    0.4596   0.0019 	    0.4645   0.0036 	   1.1  0.9	 proton.FTFP_INCLXX.5.4 
    0.8308   0.0037 	    0.8399   0.0065 	   1.1  0.9	 proton.FTFP_INCLXX.10.4 
    1.1933   0.0053 	    1.1978   0.0089 	   0.4  0.9	 proton.FTFP_INCLXX.15.4 
    0.1432   0.0005 	    0.1409   0.0004 	  -1.6  0.4	 proton.FTFP_BERT_HP.1.4 
    0.7445   0.0020 	    0.7359   0.0019 	  -1.2  0.4	 proton.FTFP_BERT_HP.5.4 
    0.1546   0.0013 	    0.1545   0.0005 	  -0.1  0.9	 proton.Shielding.1.4 
    0.8387   0.0045 	    0.8307   0.0025 	  -1.0  0.6	 proton.Shielding.5.4 
    0.1435   0.0010 	    0.1432   0.0008 	  -0.2  0.9	 gamma.FTFP_BERT_EMZ_AugerOff.250MeV.0 
    0.2086   0.0015 	    0.2077   0.0012 	  -0.4  0.9	 gamma.FTFP_BERT_EMZ_AugerOn.250MeV.0 
    0.0565   0.0004 	    0.0564   0.0003 	  -0.2  0.9	 gamma.FTFP_BERT_EMZ_AugerOff.1.0 
    0.0823   0.0006 	    0.0820   0.0006 	  -0.4  1.0	 gamma.FTFP_BERT_EMZ_AugerOn.1.0 
#----------------------------

Table-B) Total Memory : 10.5.r06 vs 10.5.r07
#-----------------------------------------------------------------------------
# total        memory           100*(r07-r06)/r06 
# 105r06          105r07        %diff           sample
#-----------------------------------------------------------------------------
  4261.1300 	  4176.3500 	-2.0	 higgs.FTFP_BERT.1400.4 
  119.5510 	  115.6710 	-3.2	 e-100MeV.FTFP_BERT.100MeV.4 
  56252.5000 	  56255.7000 	 0.0	 e-100MeV.Shielding.100MeV.4 
  99585.0000 	  99606.9000 	 0.0	 e-100MeV.Shielding_EMZ.100MeV.4 
   47.1500 	   47.1966 	 0.1	 e-.FTFP_BERT.1.0 
   48.4763 	   48.9051 	 0.9	 e-.FTFP_BERT.5.0 
   49.3873 	   49.9829 	 1.2	 e-.FTFP_BERT.10.0 
   59.7518 	   60.2274 	 0.8	 e-.FTFP_BERT.50.0 
   47.3974 	   47.2801 	-0.2	 e-.FTFP_BERT.1.4 
   49.7060 	   48.4835 	-2.5	 e-.FTFP_BERT.5.4 
   52.5119 	   49.9471 	-4.9	 e-.FTFP_BERT.10.4 
   74.5587 	   60.1300 	-19.4	 e-.FTFP_BERT.50.4 
   66.0311 	   66.4769 	 0.7	 pi-.FTFP_BERT.1.0 
  123.3630 	  120.8170 	-2.1	 pi-.FTFP_BERT.5.0 
  167.8530 	  172.8240 	 3.0	 pi-.FTFP_BERT.10.0 
  505.4380 	  496.8000 	-1.7	 pi-.FTFP_BERT.50.0 
   66.8361 	   64.6915 	-3.2	 pi-.FTFP_BERT.1.4 
  125.4550 	  125.2090 	-0.2	 pi-.FTFP_BERT.5.4 
  167.3910 	  169.9100 	 1.5	 pi-.FTFP_BERT.10.4 
  504.5890 	  507.1740 	 0.5	 pi-.FTFP_BERT.50.4 
   66.9405 	   64.8124 	-3.2	 pi-.QGSP_BERT.1.4 
  118.3920 	  126.4470 	 6.8	 pi-.QGSP_BERT.5.4 
  167.9300 	  178.4030 	 6.2	 pi-.QGSP_BERT.10.4 
  543.1860 	  560.2700 	 3.1	 pi-.QGSP_BERT.50.4 
  788.3500 	  806.0950 	 2.3	 pi-.QGSP_BIC.1.4 
  2646.2900 	  2644.9100 	-0.1	 pi-.QGSP_BIC.5.4 
  4327.5600 	  4386.9000 	 1.4	 pi-.QGSP_BIC.10.4 
  16494.1000 	  16343.2000 	-0.9	 pi-.QGSP_BIC.50.4 
   87.3625 	   87.6959 	 0.4	 anti_proton.FTFP_BERT.1.4 
  135.7680 	  136.6420 	 0.6	 anti_proton.FTFP_BERT.5.4 
  186.8550 	  184.9010 	-1.0	 anti_proton.FTFP_BERT.10.4 
  560.9630 	  556.8890 	-0.7	 anti_proton.FTFP_BERT.50.4 
   60.2488 	   62.9913 	 4.6	 proton.FTFP_BERT.1.4 
  124.4090 	  133.2850 	 7.1	 proton.FTFP_BERT.5.4 
  193.1750 	  195.0430 	 1.0	 proton.FTFP_BERT.10.4 
  580.8310 	  589.6700 	 1.5	 proton.FTFP_BERT.50.4 
  2146.8800 	  2156.9700 	 0.5	 pi-.FTFP_INCLXX.1.4 
  6701.9900 	  6855.1200 	 2.3	 pi-.FTFP_INCLXX.5.4 
  11583.3000 	  11994.3000 	 3.5	 pi-.FTFP_INCLXX.10.4 
  16392.9000 	  16869.6000 	 2.9	 pi-.FTFP_INCLXX.15.4 
  1766.5500 	  1796.5100 	 1.7	 proton.FTFP_INCLXX.1.4 
  7947.4900 	  8098.1800 	 1.9	 proton.FTFP_INCLXX.5.4 
  13819.8000 	  14286.3000 	 3.4	 proton.FTFP_INCLXX.10.4 
  19764.6000 	  20098.4000 	 1.7	 proton.FTFP_INCLXX.15.4 
  14770.1000 	  14740.8000 	-0.2	 proton.FTFP_BERT_HP.1.4 
  18901.1000 	  18863.4000 	-0.2	 proton.FTFP_BERT_HP.5.4 
  15217.1000 	  15278.0000 	 0.4	 proton.Shielding.1.4 
  21863.6000 	  21800.6000 	-0.3	 proton.Shielding.5.4 
  381.1940 	  380.9910 	-0.1	 gamma.FTFP_BERT_EMZ_AugerOff.250MeV.0 
  670.0140 	  668.9090 	-0.2	 gamma.FTFP_BERT_EMZ_AugerOn.250MeV.0 
  926.7030 	  929.5130 	 0.3	 gamma.FTFP_BERT_EMZ_AugerOff.1.0 
  2077.6500 	  2072.2900 	-0.3	 gamma.FTFP_BERT_EMZ_AugerOn.1.0