Timing Belt Movement - Normal?

[C3L1CA]

Is it normal to have a little movement on the timing belt between the intake cam and the tensioner pulley when revving the motor?

It almost ripples for a split second like a motorcycle chain when revving it, then goes back to normal while keeping a steady rpm, then ripples again before going back to normal when idling. It doesn't move a lot but enough to make me a nervous.

Does any other evo have the same thing? Am I being over paranoid?

Also if it matters I have a gates racing timing belt. It also seems to have normal tension between the two cam gears and between the tensioner pulley and intake came.

Thanks guys!