Hi,
I had the same issue, the game loaded up without any issue (if I turn on FPS display in Nvidia Experience it shows decent FPS more than 60), than I started a game, at the moment I just tried Arcade scenarios so offline fully. It started without issue frame rate was more than 60, than freeze the move but I could freely move the camera around my character, the FPS still was more than 60 and it varied depended on what was on the screen while moved the camera, so it seemed to me it should be some SW related issue. The strange thing was this occurred with low resolution and "LOW" settings and the same performance was on 720p+ (my display is an old 1280*1024 4:3 one, retro rulez 🙂 ) with ULTRA settings (DX11).
It was with an Intel Pentium G3460 CPU on 3,5 Ghz + GTX950 (2GB GDDR5) + 16 GB DDR3 1600 + 240GB SSD.
I've tested other demanding games and they ran flawless, so it seems this is indeed an issue with the game itself.
I've tried all what I found on the net, but nothing helped (run as administrator, also Epic and Origins run as administrator, tried CPU process tweak to delegate full resource to the game process, even tried to reinstall fully to system drive with SSD, but nothing helped).
Solution:
I was lucky that I were able to upgrade my CPU with a quite good deal to an i7-4770 equivalent Xeon CPU (e3-1240v3), which is still under the minimum requirements, but who cares if it is working smoothly?
With the new CPU the problem have gone, and now I can play SW BF2 with 60 FPS on 1280*1024 with ULTRA settings in DX11 render mode. Which means most probably the lack of cache memory or the lack of the quad core or the hyper-threading can cause such freezing issues.
By the way I believe DICE/EA should found some SW solution for this issue as well, because other newer games are working fine on the older spec config.
