The version of Chrome 76.0.3809 has several slow problems with many applications. I suggest you try the version 77.0.3865.70 released on September 7, 2019.
Tired out Chrome 77. It is probably worse than version 76. Is anyone using vCenter HTML5 client with Chrome 76 without issues?
Working totally fine hereVersion 76.0.3809.132 (Official Build) (64-bit)vCenter 6.7 U2 and vCenter 6.7 U3