Is changing the graphics to such extent bannable?

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@QuickyTime wrote:

But i don't think it's bannable as it is currently,

he's achieving this threw a Nvidia tool

and not modifying the game files directly.

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Using 3rd party software to alter the game is against the End users Agreement 

http://www.apexrms.com/license-agreement/

3. Restrictions:
3.1 You shall not reverse engineer, disassemble, reverse translate, decompile or in any other manner decode the Software except to the extent that the foregoing restriction is expressly prohibited by applicable law notwithstanding a contractual obligation to the contrary. You shall not distribute, loan, lend, lease, rent, share, make available, grant a security interest in, assign, or otherwise transfer the Software. You shall not alter, adapt, modify or create any derivatives of the Software or merge all or any part of the Software with another program. You shall not use the Software for hosting for a third party or operating a service bureau or any other use involving the possession of data by a third party. You shall not use the Software on a server or make the Software available for others to use, or facilitate access to the Software for others. You shall not use the Software in any way that is contrary to applicable law.

Thus meaning yes, it is bannable, and will get you banned.