Same problem here....
MacBook Pro (15-inch, Mid 2012)
2,3 Ghz Quad-Core Intel Core i7
8Gb memory
SSD
Graphics Intel HD Graphics 4000 1536 MN
MacOs 10.15.7
Safari 15.1 (15612.2.9.1.30, 15612)

Working fine: Chrome Versie 96.0.4664.93 (Officiële build) (x86_64)

Same problem here....
MacBook Pro (15-inch, Mid 2012)
2,3 Ghz Quad-Core Intel Core i7
8Gb memory
SSD
Graphics Intel HD Graphics 4000 1536 MN
MacOs 10.15.7
Safari 15.1 (15612.2.9.1.30, 15612)

Working fine: Chrome Versie 96.0.4664.93 (Officiële build) (x86_64)