MikroTik Disc lite ac links

Hi guys,
this is my problem. I have two MikroTik Disc lite ac. Between these two links there is a distance of 450m. On uphill I have stick about 6m over ground and 15m in downhill. On picture you can see how that looks. I use 20Mhz bandwidth and 5520Mhz. I use google maps and compass to have best direction.When I ping from uphill my main router on downhill he show me ping like this - 1ms, 1ms, 1ms, 140ms, 240ms, 444ms, request is determinate, 1ms, 1ms, 135ms, 260ms, 500ms,…
I need to link 3 IP cameras from one side to other with 6mbit/s.
Do I need to use vertical polarization? What is a best settings selections for Serbia country frequency?
Can you help me with this please?

Thanks in advance, Milan
mikrotik vision.jpg

Thank you for a reply administrators.
Jebem vas u usta drljava. Vi cete da pravite neki kurac. Idite da cuvate ovce, majke vam ga nabijem.
Thanks again.