redcelt32 wrote:
 Small piece of directly constructive advice based on my observations and experiences as a GM.  Optimizing focused players with strong game mastery (which it sounds like you are) tend to make characters that disturb GMs and other players for three reasons:
- extremely efficient and synergistic character design.  Very strong and solid builds with few weakness, are versatile, and very very good at doing the things they are good at.  
- Super stack all their feats, traits, and most especially stats towards doing the Things They are Good At.
- Tend to be extremely efficient at actions each turn, never wasting a round or doing things that are less than The Best Action Each Round.
All of these things are to be admired.  However, unless you are sitting at a group of like-minded and similarly skilled players, and most importantly GM, this tends to upset people.  That sounds like what is happening with your GM.  
Here is my advice...unstack your feats, stats, etc and make them more moderate, with a mix of non-optimized feats you can still enjoy playing with s other aspects of  your character.  The game mastery players in my games can have all 10s and 12s, be underequipped, and are still going to shine because their build ability and action efficiency are very strong.   
I don't agree with that advice. Telling someone to basically throw away a character design or build to make the GM happy is BS.
The OP has specifically stated that the other players are decked out with magic gear and weapons and he has none. He has stated the GM has made him reroll saves even when he rolled a success first. Autoing his character with Odd/Even rolls. And you really think this is about him taking something like Weapon Focus over Toughness? Or that he might have a 16 in a stat rather then a 10?
EDIT: The argument that it is a compliment is complete BS as well. Saying that the DM is only giving out gear to other players because he is to OP is BS on a level I am not sure all the Cows on this planet can keep up with.
He is playing a Witch, which is powerful yes but that is the class, saying he should get 0 loot and have to dump all his feats into useless Fluff Feats and drop his stats to 10 point buy is BS