PUBG is not the best game to go off of when judging PC performance. It is a very poorly optimized and taxing game on even hefty rigs. If you feel a strong need to upgrade to a 20 series, then the best price to performance card will be the 2070 though there is next to no info on these cards so you are taking a bit of risk by investing in one. There has been little testing, little support and there have been some recalls on the higher tier models so keep that in mind. If you don't feel comfortable investing in one but want to upgrade, I would suggest a 1080. Sometimes you can find them on sale as cheap as $450, that is similar in price to a 2070, but 1080s are tried and true. By no means am I saying to not get a 2070, but know the risks...