The digging with shovel lag spikes

[DCJey]

Due to active survey work on my farm, i experienced drasticall lag spikes with client crash. Flavor objects start to blink and lag increasing even after the digging is done...

There is possibility, that i made crash server, when i started to dig the edge of the cliff

[jorb]

You did not crash the server.

Care to enlighten us as to your system specs and other info that might help explaining your problem?

[DCJey]

The lag increasing, when the landscape is trying to change.

Language: Russian (Regional Setting: Russian)
OS : Windows 7 x86 SP1
System Manufacturer: Gigabyte Technology Co., Ltd.
System Model: M68MT-S2P
Processor: AMD Phenom(tm) II X2 550 Processor (2 CPUs), ~3.1GHz
Memory: 2048MB RAM
DirectX Version: DirectX 11
Card name: NVIDIA GeForce GT 430

Java 7 Update 67
No custom clients
Ingame graphic options are disabled.

SpeedTest.Net
D: 8,5 Mbps
U: 6 Mbps

[DCJey]

Updated to Java 8 Update 60, and it became more stable, but still laggy. Yet i have to investigate digging flavor objects (grass or plants? whatever it is), because spikes comes from destroying them