The 9100F is an i3, not an i5, but still a very powerfull CPU for the money. But for the month I used one as CPU for my primary gaming PC, I came across titles that were not enjoyable to play using the i3 9100F. There was a ton of games that played very well, but the more recent the title, the worse the gaming experience was in some cases.
The thing was, it did deliver qiute good framerates, but for some reason the FPS weren't displayed in a smooth way in certain titles - Battlefield V being one of the worst. So a few games, even with decent framerates according to RTSS and MSI Afterburner, felt laggy and choppy.
Some games played excellently though, and I had a lot of fun playing some titles on the i3 9100F. Destiny 2 did very well, easily displaying 110+ or more FPS @1440p
But it is already struggeling with certain current titles, so buying a 9100F specefically gor gaming, you're investing in a CPU, which is most likely not going to do well in upcomming AAA titles, so you're kinda already behind on points, and you might as well just begin saving for new hardware the instant the PC has been built.