I have the same issue on openSUSE Leap 15 - it's not Windows specific. I've found that the number of tabs doesn't matter too much - if I copy the URL of the non-loading tab, close the tab, open a new one and paste the URL there, it will load around 9/10 times (if it doesn't, third time is always the charm).

Drove me nuts enough that I switched to Brave for a bit as my main driver, but I've been experiencing some crashing from it recently and I miss my bookmark keywords, so I might go back.