Texture Resolution

Is there any way to change the Texture Resolution?
When I look at client setup, this feature is fixed.
How can I change it? High Texture Resolution it’s improving the lag on my pvp, I would like to try on low resolution.
Thanks

We have disabled this feature in the clientsetup as there are no noticeable difference in terms of FPS with the current newer generations of gpu’s.

Unfortunately I am from a poor family and I use a notebook with the old graphic card on board (Intel HD 3000).
Is there any way to enable this feature? Since 2008 I play RYL and the only way is changing the texture resolution to LOW, so I don’t get too much lag.
You can check on youtube (Dink Cleric) some gameplays in others servers with this setting at low working fine for me.
If were possible, I would be appreciated.