Yeah pretty much if there is no Dedicated Card in there too.
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You can try some of this to help the FPS.
Turn everything Off or to the lowest setting in the game. Change the resolution to be lower, yes it'll look ugly...
No Vsync
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Open Notepad.
Copy and Paste this:
RenderDevice.ForceRenderAheadLimit 1
PerfOverlay.DrawGraph 0
PerfOverlay.DrawFps 1
PostProcess.DofMethod 0
PostProcess.BlurMethod 0
PostProcess.DynamicAOEnable 0
PostProcess.DynamicAOMethod 0
Render.VSyncFlashTestEnable 0
WorldRender.TransparencyShadowmapsEnable 0
WorldRender.MotionBlurEnable 0
WorldRender.MotionForceOn 0
WorldRender.SpotLightShadowmapEnable 0
WorldRender.SpotlightShadowmapResolution 256
WorldRender.LightTileCsPathEnable 0
RenderDevice.Dx11Enable 0
RenderDevice.Dx11Dot1Enable 0
RenderDevice.Dx11Dot1RuntimeEnable 0
RenderDevice.VSyncEnable 0
RenderDevice.TripleBufferingEnable 0
GameTime.MaxVariableFps 30
Save it as "user.cfg"
That last one is an FPS Limiter!! 30 stable is what your goal should be.
You cannot have user.cfg.txt
enable "View Extentions of Known File Types" from Folder Options in Control Panel
Put it in your PvZ directory
\\Origin Games\Plants vs Zombies Garden Warfare
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Turn Power Profile to "High Performance" and CCC (AMD Catalyst Control Center) has High Performance settings.
In desperation to get better FPS you can go to CCC, go to 3D Properties.. make sure they are Defaulted/Reset first... then make a profile for PvZ.exe and take an Axe to stuff.. turning sliders to Performance over Quality...
...
Dangerous... and I don't have any direct knowledge of that CPU specifically but I know some AMD APUs overclock like beasts... didn't take long to burn out my laptop :P