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it sound like a massive air bubble that is circulating around the system. It could be kettling due to scale but that is usually just noisy no shaking the kitchen.
What you describe is a severe overheat. if you turn the boiler temperature right down on the boiler control panel does this help
Yes its very likely going to be the limit thermister. does it lock out when it overheats?
That doesnt sound like a thermostat problem then.
I will opt out to open this question up for everyone else to see.
Hopefully someone will be able to pinpoint your fault.