VERY VERY SLOW in browser, crashes many times when starting the game, crashes on steam also, this is a screenshot for an error I've got on chrome: https://1drv.ms/i/s!AvrqgQ8StluTgUphJ8crXeXemxcD
just reach out to the support team by sending a mail to firstname.lastname@example.org
I am very confident they are able to offer a solution or at least some suggestions concerning this issue.
Add as many details as possible, they are always answering asap.
Just give it a try and keep us updated please.
As nasenstein already mentioned, please contact our support team with further details on your system. As we can see from the screenshot, a shader error points to a graphics card or driver issue. Are you using a card according to the minimum system requirements with up-to-date drivers?