Keep in mind that this is still the beta phase of the game, and numerous bugs and optimisation issues are bound to happen. That's about everything we can advise you at this moment. These issues have nothing to do with your PC and should be fixed by developers, so you don't need to worry about them.
CAN ZOSI VIEW FPS APK
Be free to experiment with Halo Infinite video settings and find what best suits your gaming rig. For example, one ZOSI user downloads ZOSI Android APK file on LeTV and successfully views ZOSI IP cameras on TV. If you have AMD Radeon RX 500 Series GPU, you should know that it might cause crashes if Async Compute in the Video Settings is set to On, and disabling Async Compute should fix that issue. Try to lower some settings gradually and see how will that improve your frame rate. Experiment with the game's "Video" settings.It is known that some games when played in "Windowed Mode" can cause performance issues, so make sure to always play the game on fullscreen.
CAN ZOSI VIEW FPS DRIVERS
The next basic thing you should check is if your GPU drivers are up to date. So, before everything else, make sure that you meet Halo Infinite PC system requirements.