My BMW's gearbox is jerking in Sharjah traffic – any recommendations for a specialist?

I've got a 2016 BMW 5 Series that's started jerking between gears, especially in stop-start traffic around Sharjah, and I'm worried it's the mechatronic unit playing up. I've been told that for a proper BMW gearbox repair Sharjah, you need a specialist who can properly diagnose the issue rather than just recommending a full rebuild. A mate recommended a workshop with Innovative BMW Gearbox Repair Specialists who actually use factory-grade diagnostic equipment and have experience with these ZF transmissions. Has anyone here had a good experience with a particular workshop in Industrial Area 4 or 5 that actually knows these transmissions and can do a proper diagnosis before quoting? I'd really appreciate any honest recommendations.