I like your mod very much, as it seems to be the only one still working correctly in 0.17 when it comes to infinite resources. The others rely on yield which heavily increases the output per second for all the miners etc.

I changed the mod to only update oil fields based on the timer.
All ores (and possible other resources) are still on the 'when depleted' setting.

As there are very few oil fields, could that be the solution for the lag spike problem?
I used the by-name-filter that's available for surface entities.

Hope this mod is not death for any fix idee for the lag spike issue

If when-depleted works well for ores and the only concern is oil, would either of these work?

data.raw.resource["crude-oil"].infinite_depletion_amount = 0
or
data.raw.resource["crude-oil"].minimum = data.raw.resource["crude-oil"].normal

My guess is the first would keep oil fields at their initial yield with no decay. The second would allow decay down to 100% then hold it at 100%.

I could investigate a little more, it's indeed not really needed to refill the ore on interval, but for the oil that is the only option for a high yield as far as I know. Thanks for the suggestions