SfRadialMenu touch to open in v17 is working fine.
In v18 its not always working. A lot of my customers on different phones had a problem with SfRadialMenu 18+ that it wasn't openinng, or they need to click many times on it to open it.
I have tested it on my Xiaomi Redmi Note 8 Pro on Android 10 and i can see a really big lag after click in v18, on the other hand there is no lag in v17.
On older Samsung s5 with Android 6 its not oppening after one-tap and i need to tap it many times to open it.
I think that it can be a problem with animations. Some changes in v18 looks like are cpu-heavy?