Not OP, but I think I have enough of appropriate experience / friends that match your question.
> if it is possible to maintain friendship with high IQ people by a normal IQ people
Yes.
> Do the high IQ people find boring to maintain the thought process and conversation with low IQ people ...
Yes, but not always. High IQ !== does know everything. And usually high IQ people love to learn new things, from anyone who can teach them.
> ... and hence can not enjoy company?
No, it can be enjoyed regardless. Even when you ignore activities not based on conversation (e.g. Sports, games), sometimes you want boring conversation.
> if it is possible to maintain friendship with high IQ people by a normal IQ people
Yes.
> Do the high IQ people find boring to maintain the thought process and conversation with low IQ people ...
Yes, but not always. High IQ !== does know everything. And usually high IQ people love to learn new things, from anyone who can teach them.
> ... and hence can not enjoy company?
No, it can be enjoyed regardless. Even when you ignore activities not based on conversation (e.g. Sports, games), sometimes you want boring conversation.