I have made a form which is ok using the previewer of app designer. The survey sheet has more than 1000 lines. Using this form, ODK survey is very low on my tablet and sometimes it hangs (it stops on Loading).
So please, what are the limitations of ODK Survey ?
This is a hard question to answer because you have the freedom to do a lot in Survey. Things that require more processing power - 1) calculates update constantly 2) the more prompts on your screen the slower it will render because the prompts update based on the other prompts (@clarice_larson can say more about the speed of each prompt). In general ODK 2 is doing a lot more so it requires more ram and processor speed. Making sure you have the most up to date webkit is helpful as Google has been working on webkit performance improvements.