PlayerUnknown's Battlegrounds pre-release build has been available since March, and by the first month it had sold well over a million copies. So the game is popular, but it's also known for not being greatly optimized. I've been messing around with a few CPU and GPU combinations over the past week, seeing which hardware deliver the most value.
Any major computer upgrade generally requires a full software reinstall too. No so if you heed the advice in the guide to Upgrading a Motherboard without Reinstalling. PCSTATS Tips