SSAS Tabular Performance Issue moving from Laptop to Server

Hi all,
I've got an issue where my tabular model in SSAS on a Lenovo W520 laptop (DEV) is out-performing the same model on a Dell R720 server (details of each system below). Our unit tests involves 1 query that takes 2-3 seconds on the laptop
vs 12-15 seconds on the server. The main difference is the laptop is running Windows 7 Pro and the server is Windows Server 2012 R2.
So for some additional tests we did the following:
1. Loaded up the model on another laptop (same model and specs as before) the same way we moved the model over to the server and it performed as expected 2-3 seconds for the query.
2. Loaded up the model on a dell OptiPlex system (i3 processor, 8GB Ram, Win7 Pro) and runs 2-3 seconds still for the query.
3. Loaded up Win2k8R2 on the dell OptiPlex system (above) and still run 2- 3 seconds)
At this point we are thinking it is an OS issue between 2008R2 and Server 2012 R2 but not sure what the true difference is between the OS(s) that would cause such a huge performance difference. We thought it might be the power saving mode that ships
with 2012 R2 so set that performance but still seeing a long lag in the query.
Laptop Specs:
Lenovo W520
1 x i7 2.5GHz 2860QM Processor (8 Cores, )
16 GB Memory (DDR3, Dual)
Windows 7 Pro
Server Specs:
Dell R720
2 x E5-2697 V2 (12 Cores each, 2.7GHz, with turbo boost enabled)
4 x 32GB Memory (LRDIM 1866 MT/s)
Windows Server 2012 R2 (All latest updates and drivers)
There has to be some simple setting I'm missing in the 2012 R2 server that is causing this poor performance in SQL Server. I've seen folks in the tabular forums using Server 2012 R2 so there has to be a way to have this server perform better.
I'm about at my wits end on this one and reaching out for help from the experts out there. What advice can you give me?
Thanks in advance for any help you can provide!
Best regards,
Michael

Hi Michael,
Acording to your description, you encounter the perofrmance issue in SQL Server Analysis Services Tabular model, right?
as you increase the data load, add more users, or run complex queries, you need to have a strategy for maintaining and tuning performance. Here is a document that describes strategies and specific techniques for getting the best performance from your tabular
models, including processing and partitioning strategies, DAX query tuning, and server tuning for specific workloads.
http://msdn.microsoft.com/en-us/library/dn393915.aspx
Besides, if you cannot determine your answer here or on your own for a complex problem, consider opening a support case with Microsoft. Visit this link to see the various support options that are available to better meet your needs:
http://support.microsoft.com/default.aspx?id=fh;en-us;offerprophone
Regards,
Charlie Liao
TechNet Community Support

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