Hi,
I would help to find the terrains with the smalles cell sizes (Better looking results for this mod).
So here is a List with my findings:

Top smalles cell sizes:
# Archipelago 2
# Halsoy 2
# Ihantala 2
# RHS_PKL 2
# Al Salman 2.0 2.5
# VN The Bra 2.5
# Desert Battlegrounds 2.5
# Fapovo 2.5
# Kingdom of Regero 2.5
# Kunduz 2.5
# Mega City 3 2.5
# Mutambara 2.5
# Niakala 2.5
# Sangin 2.5
# Straya 2.5
# Tria 2.5
# Maksniemi 2.75
# Pulau 3
# Summa 3
# Vinjesvingen 3

Full List:
# Al Salman 2.0 2.5
# Altis 7.5
# Angel Island 8
# Anizay 5
# Archipelago 2
# Beketow 10
# Borholm 5.5
# Bozcaada 10
# VN The Bra 2.5
# Bukovina 7.5
# Bystrica 7.5
# VN Can Lao Nam 5
# Chernarus 7.5
# Chernarus (Autumn) 7.5
# CLA Clafghan 10
# Cossack Cape 5
# Deniland 10
# Desert Battlegrounds 2.5
# Desert_E 4
# CWR3 Desert Island 12.5
# Diego Garcia 10
# Dingor/Lingor 10
# District 41, Ruegen 4
# Esseker New 6
# CWR3 Everon 12.5
# Fapovo 2.5
# F.S.F. Calivigny 8
# Gorgona 4
# Hellanmaa 4
# Halsoy 2
# Ihantala 2
# Imrali Island 10
# Isla Duala 10
# Isla Primus 4
# VN Khe Sanh 3.75
# Kidal 30
# Kingdom of Regero 2.5
# Kobbvatn 4
# CWR3 Kolgujew 12.5
# Kujari 4
# Kunduz 2.5
# Livonia 6.25
# Lythium 10
# Majan 4
# Maksniemi 2.75
# CWR3 Malden 1985 12.5
# Malden 2035 12.5
# Mega City 3 2.5
# MSKE 2017 6.25
# Mull of Kintyre 6
# Mutambara 2.5
# Namalsk 6.25
# Niakala 2.5
# CWR3 Nogovoa 12.5
# Panthera 5
# PMC 51km Desert 12.5
# Porto 10
# Provinggrounds 4
# Pulau 3
# Rahmadi 10
# RHS_PKL 2
# Rosche 7.5
# Ruha 4
# Sahrani 10
# Sangin 2.5
# Sennoe 3.5
# Shapur 4
# Southern Sahrani 10
# S.T.A.L.K.E.R.: Live Zone 5
# Stratis 4
# Straya 2.5
# Summa 3
# Takistan 6.25
# Takistan Mountains 6.26
# Tanoa 3.75
# Tembelan Island 5
# Tria 2.5
# TOA Seatle 15
# TOH South Asia 30
# Twentynine Palms 10
# UMB Colombia 5
# United Sahrani 10
# Utes 10
# Vinjesvingen 3
# Virolahti 4.395
# Virtual Reality 4
# Wake Island 10
# Zargabad 4

You want find out the cell size of your favourite terrain and post it here? Then:
* start the terrain in the editor
* put a player in it
* put this in the console (open with ESC):

getTerrainInfo params ["", "", "_cellsize", "_resolution"];
hint format["cellsize %1",_cellsize];

* execute it local, then close console (ESC)
* a hint would show you the cell size
* post it here