Local sync very slow

Hi I have just started using Cryptomator was using veracrypt with spideroak before but too many problems!
I have moved all my data into a vault on googledrive about 50gbs mixture of both pdf’s images/videos and MS files. When I inlock the vault the local sync is shown and use these files as normal however any of the files i try and open are very slow, so is moving around from one folder to another. Its takes a while to open any files. Yesterday I was working on a word document and needed to insert a image, it took ages for the folder to open and select the image. This has been happening since i have had cryptomator. Is there something I am missing doing wrong. Volume type Dokany, ver 1.5.6.
Veracrypt was so quick never had any issues in looking through folders or opening files.
Thank you