No I haven't tried. Aren't T05 too fast?
It depends on what you see as being too fast, are balls going long, off the table? If so by how much? in a general sense, 300mm long, 600mm long??
Is it really a control issue rather than solely speed?
Is it a technique issue??
we usually ask for some footage of you playing, to see what sort of level you play at, before advising.
T05 is a top end rubber and is best used by players that have reached a good standard of play and consistency.
The difference between your Primorac and Grubba may not be huge, but try the T05 on the Grubba, take one sheet off the Primorac and stick it on the Grubba. Then you’ll get a very good comparison between the 2 blades with the same rubber on them.
Then you’ll see how ‘speed’ relates to the length of your shots on different blades. Which is just a good thing to do, regardless!!