almost impossible to sync GPS with video, forward/back buttons dont work

After a couple of updates ago, I find it almost impossible to sync my GPS metrix with my videos. Basically, the forward/back buttons for the g-metrix half don't work; The only workaround I have found is to zoom in and move the point manually but it gets even weirder because with the last update I can even place the point far from the path which does not make much sense. The real trouble is when I try to apply this process to an area where we are riding several laps. It used to be possible to zoom in to a very large scale where I could see the different paths (laps) so I would choose the right one and move the point to that path, but there is a limit now with the scale and I cannot take advantage of this trick anymore. No idea why these 2 buttons don't work in my laptop
I uninstalled and installed again and the problem persists. I am almost to the point of searching for an old version and check if I can get it to work because the video/g-metrix syncronization is becoming a big pain

if anybody can offer some help, that would be appreciated!!

My setup:
- Gopro hero 4 recording at 720/1080 at 60 fps
- computers: Either Edge 520 or fenix 5X using smart recording
- Using FIT for the g-metrix (have tried with GXP and same results)
- Laptop ASUS, i7 processor., 16 GB RAM, windows 10, Nvidia Geoforce GTX 850M
- Virb edit 5.4.2